<template>
  <div>

    <!-- 1.定义面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/admin' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>物品管理</el-breadcrumb-item>
      <el-breadcrumb-item>物品管理列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 2.定义卡片视图 -->
    <el-card class="box-card">

      <!-- 3.定义栅格的一行 :gutter="20"定义行间距   :span="9" 占位符  -->
      <el-row :gutter="20">
        <el-col :span="9">
          <!-- 3.定义搜索框 -->
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getItemList">
            <el-button slot="append" icon="el-icon-search" @click="getItemList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <!-- 定义添加按钮-->
          <el-button type="primary" @click="dialogVisible = true">添加物品</el-button>
        </el-col>
      </el-row>

      <!-- 物品数据表格展现  border 边框线属性  -->
      <el-table :data="itemList" border stripe>
        <el-table-column type="index" label="序号"></el-table-column>
        <el-table-column prop="itemName" label="物品名称"></el-table-column>
        <el-table-column prop="itemSale" label="物品价格"></el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="small" @click="updateitem2Btn(scope.row)"></el-button>
            <el-button type="danger" icon="el-icon-delete" size="small" @click="deleteitem(scope.row)"></el-button>
          </template>

        </el-table-column>
      </el-table>

      <!-- 定义分页组件 关于分页插件的属性说明
            1.@size-change 如果分页中每页实现的条数发生变化 则会触发这个该事件
            2.@current-change 当页数发生改变时,触发该函数
            3.current-page 当前选中的页
            4.page-sizes   页面数据展现的选项
            5.page-size    默认选中的页数
            6.layout    分页中展现的数据种类
            7.total     记录总数
       -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
        :current-page="queryInfo.pageNum" :page-sizes="[5, 10, 20, 40]" :page-size="queryInfo.pageSize"
        layout="total, sizes, prev, pager, next, jumper" :total="total">
      </el-pagination>
    </el-card>

    <!-- 编辑物品新增对话框 visible.sync 控制对话框的显示-->
    <el-dialog title="添加物品" :visible.sync="dialogVisible" width="50%" @close="closeDialog">
      <!-- 定义物品提交表单数据-->
      <el-form :model="additem2Model" ref="additem2Ref" label-width="100px" class="demo-ruleForm">
        <el-form-item label="物品名称" prop="itemName">
          <el-input v-model="additem2Model.itemName"></el-input>
        </el-form-item>
        <el-form-item label="物品价格" prop="itemSale">
          <el-input v-model="additem2Model.itemSale" type="itemSale"></el-input>
        </el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="additem2Btn">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 定义修改页面 当对话框关闭时,将表格数据重置-->
    <el-dialog title="修改物品" :visible.sync="updateDialogVisible" width="50%" @close="closeUpdateDialog">
      <!-- 定义物品提交表单数据-->
      <el-form :model="updateitem2Model" ref="updateitem2Ref" label-width="100px">
        <el-form-item label="物品姓名" prop="itemName">
          <el-input v-model="updateitem2Model.itemName" disabled></el-input>
        </el-form-item>
        <el-form-item label="物品价格" prop="itemSale">
          <el-input v-model="updateitem2Model.itemSale"></el-input>
        </el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="updateDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="updateitem2">确 定</el-button>
      </span>
    </el-dialog>


  </div>
</template>

<script>
  export default {
    data() {
      return {
        queryInfo: {
          query: '',
          pageNum: 1,
          pageSize: 5
        },
        itemList: [],
        //记录总数是数值类型
        total: 0,
        dialogVisible: false,
        additem2Model: {
          itemName: '',
          itemSale: ''
        },
        updateDialogVisible: false,
        //定义修改物品数据封装
        updateitem2Model: {}
      }

    },
    methods: {
      async getItemList() {
        const {
          data: result
        } = await this.$http.get('/item2/list', {
          params: this.queryInfo
        })
        if (result.status !== 200) return this.$message.error("物品列表查询失败")
        this.itemList = result.data.rows
        this.total = result.data.total
        console.log("总记录数:" + this.total)
      },
      // async updateStatus(item) {
      //   //实现物品上下架状态修改  注意使用模版字符串  ES6中提出的新用法 ${key}
      //   const {
      //     data: result
      //   } = await this.$http.put(`/item2/status/${item.id}/${item.status}`)
      //   if (result.status !== 200) return this.$message.error("物品状态修改失败!")
      //   this.$message.success("物品状态修改成功!")
      // },
      handleSizeChange(pageSize) {
        //console.log("每页展现的条数"+pageSize)
        this.queryInfo.pageSize = pageSize
        this.getItemList()
      },
      handleCurrentChange(pageNum) {
        //console.log("页数:"+pageNum)
        this.queryInfo.pageNum = pageNum
        this.getItemList()
      },
      closeDialog() {
        //重置表格数据
        this.$refs.addItem2Ref.resetFields()
      },
      //校验物品数据
      additem2Btn() {
        this.$refs.additem2Ref.validate(async valid => {
          //如果校验失败 则停止数据
          if (!valid) return
          //console.log(this.additemModel)
          const {
            data: result
          } = await this.$http.post('/item2/addItem2', this.additem2Model)
          if (result.status !== 200) return this.$message.error("物品新增失败")
          this.$message.success("物品新增成功")
          //关闭对话框
          this.dialogVisible = false
          //重新获取物品管理列表
          this.getItemList()

        })
      },
      async updateitem2Btn(item) {
        this.updateDialogVisible = true
        const {
          data: result
        } = await this.$http.get("/item2/" + item.itemId)
        if (result.status !== 200) return this.$message.error("物品查询失败")
        this.updateitem2Model = result.data
      },
      closeUpdateDialog() {
        //重置表格数据
        this.$refs.updateitem2Ref.resetFields()
      },
      updateitem2() {
        //1.预校验数据
        this.$refs.updateitem2Ref.validate(async valid => {
          if (!valid) return this.$message.error("表单验证没有通过")
          //根据接口文档要求封装数据
          let item = {}
          item.itemId = this.updateitem2Model.itemId
          item.itemName = this.updateitem2Model.itemName
          item.itemSale = this.updateitem2Model.itemSale
          const {
            data: result
          } = await this.$http.put(`/item2/updateItem2`, item)
          if (result.status !== 200) return this.$message.error("员工修改失败")
          this.$message.success("员工更新成功")
          this.updateDialogVisible = false
          this.getItemList()
        })
      },
      async deleteitem(item) {
        //1.消息确认框
        const result = await this.$confirm('此操作将永久删除 ' + item.itemName + ', 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(error => error)

        //如果确认  confirm  如果取消 cancel
        if (result !== 'confirm') {
          return this.$message.info("删除取消")
        }
        const {
          data: result2
        } = await this.$http.delete(`/item2/${item.itemId}`)
        if (result2.status !== 200) return this.$message.error("删除失败")
        this.$message.success("删除成功")
        //重新加载 数据
        this.getItemList()
      }
    },
    //利用钩子函数实现数据查询
    mounted() {
      this.getItemList()
    }
  }
</script>


<style lang="less" scoped>

</style>
